The collinearly-improved Balitsky-Kovchegov equation
The high-energy evolution in perturbative QCD suffers from a severe lack-of-convergence problem, due to higher order corrections enhanced by double and single transverse logarithms. We resum double logarithms to all orders within the non-linear Balitsky-Kovchegov equation, by taking into account suc...
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25-01-2016
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| Abstract | The high-energy evolution in perturbative QCD suffers from a severe
lack-of-convergence problem, due to higher order corrections enhanced by double
and single transverse logarithms. We resum double logarithms to all orders
within the non-linear Balitsky-Kovchegov equation, by taking into account
successive soft gluon emissions strongly ordered in lifetime. We further resum
single logarithms generated by the first non-singular part of the splitting
functions and by the one-loop running of the coupling. The resummed BK equation
admits stable solutions, which are used to successfully fit the HERA data at
small $x$ for physically acceptable initial conditions and reasonable values of
the fit parameters. |
|---|---|
| AbstractList | The high-energy evolution in perturbative QCD suffers from a severe
lack-of-convergence problem, due to higher order corrections enhanced by double
and single transverse logarithms. We resum double logarithms to all orders
within the non-linear Balitsky-Kovchegov equation, by taking into account
successive soft gluon emissions strongly ordered in lifetime. We further resum
single logarithms generated by the first non-singular part of the splitting
functions and by the one-loop running of the coupling. The resummed BK equation
admits stable solutions, which are used to successfully fit the HERA data at
small $x$ for physically acceptable initial conditions and reasonable values of
the fit parameters. |
| Author | Mueller, A. H Iancu, E Triantafyllopoulos, D. N Madrigal, J. D Soyez, G |
| Author_xml | – sequence: 1 givenname: E surname: Iancu fullname: Iancu, E – sequence: 2 givenname: J. D surname: Madrigal fullname: Madrigal, J. D – sequence: 3 givenname: A. H surname: Mueller fullname: Mueller, A. H – sequence: 4 givenname: G surname: Soyez fullname: Soyez, G – sequence: 5 givenname: D. N surname: Triantafyllopoulos fullname: Triantafyllopoulos, D. N |
| BackLink | https://doi.org/10.1016/j.nuclphysa.2016.01.052$$DView published paper (Access to full text may be restricted) https://doi.org/10.48550/arXiv.1601.06525$$DView paper in arXiv |
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| Snippet | The high-energy evolution in perturbative QCD suffers from a severe
lack-of-convergence problem, due to higher order corrections enhanced by double
and single... |
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| SubjectTerms | Physics - High Energy Physics - Phenomenology |
| Title | The collinearly-improved Balitsky-Kovchegov equation |
| URI | https://arxiv.org/abs/1601.06525 |
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